Woodworking machine



Dec. 2, 1941. o. ,6. DAY 2,265,064

WOODWORKING MACHINE Filed May 10, 1940 4 Sheets-Shet 1 v INVENTOR.

ATTORNEYS Dec. 2, 1941.

o. G. DAY

7 WOODWORKING MACHINE I 4 Sheets-Sheet 2 Z INVENTOR.

Filed May 10, 1940 ATTORNEY. I

Dec. 2 1941. o. G. DAY 2,265,054

WOODWORKING MACHINE I I Filed May 10., 1940 4 Sheets-(Sheet s INVENTOR.

ATTORNEYS Dec. 2, 1941. o. G. DAY 2,265,064

woonwonxme MACHINE Filed May 10, 1940 4 Sheets-Sheet 4 INVENTOR.

ATTORNEYS Patented Dec. 2, 1941 WooDvvonKmG MACHINE Application May 10, 1940, Serial No. 334,335

2 Claims.

The present invention relates to improvements in wood-working machines, and relates more particularly to an improved machine for shapin heels. I

The main object of my invention is to provide a machine which will shape the upper face of a heel, and more particularly the upper face of a wedge type heel.

The shaping of the top surface of a wedge type heel is presently accomplished by a turning machine in which the heel is placed in a clamping member and manually moved into contact with a set of revolving cutting blades. When the heel surface has been cut, the clamp member is manually loosened, the finished heel removed, and a new blank inserted. This process is both slow and tedious. 7

Therefore, another object of my invention is to provide a machine which will automatically grip a heel, shape the upper surface thereof and thereafter release said heel.

Presently, the top surface of a wedge type heel is a single curved surface, not allowing for the differences in depth which should be present between the inner edge of the top surfac and the outer edge thereof. It is of great advantage that a wedge type heel have the edge correspond to the arch of the foot, so the top surface of the front part of the heel will more closely accommodate the base of the foot.

Therefore, another object of my invention is to provide a machine which will cut a warped surface on the top face of a Wedge type heel, said surface being shaped to accommodate the base of the human foot.

Another object of my invention is to provide a machine which will automatically grip a blank, cut a predetermined warped surface in the top face of said blank and thereafter release said blank.

Still another object of my invention is to provide a machine which will automatically grasp a blank wedge type heel Whose sides have been cut to shape, cut a predetermined warped coniii) Figure 2 is a section along line 2-2 of Figure 1; V r x p Y Figure 3 is a section along the line 3-3 of Figure 2;

Figure 4 is a section along line 4-4 of Figure Figure 5 is a detail view of the versal joint;

Figure 6 is a section along line 6-6 of Figure motor frame uni- Figure 7 is a section along line I-'I of Figure 4; I v v s Figure 8 is a fragmentary'top plan view of another embodiment of work holding jaws;

Figure 9 is a front view of Figure 8, the jaws being shown partially in section;

Figure 10 is a perspective View of one type of cut piece; and

Figure 11 is a perspective view of another type of cut piece.

Referring to the drawings, vA designates a bench frame, said benchframe having all the worlnng parts of my-machine "positioned thereon. Extending upward at one vend of the bench frame A is the vertical frame standard I-having a universal joint B positioned on the upper face thereof,said joint'universally securing the motor frame C to said standard I. p

Referring to Figures 5 and'fi, the universal joint B comprises a bearing member I0 secured to the top wall 2 of the frame standard I by means of a pair of bolts 3 passing through flanges I I extending sidewardly from said bearing member I0 and through said top wall 2. Pin I2 is rotationally positioned in bearing I I1 and terminates in a pin receiving member I3 having the axis of bore I l of said pin receiving member I3 normal to the axis of pin I2. Rotationally secured to member I3 by means of pin I5 and lock nut I6, said pin passing through openings in the extensions ll of the motor holding frame C and the bore I l, is the motor holding frame C.

Positioned on the frame C is motor D, said motor D being secured to the frame by means of a pair of bolts vll passing through said frame and the base of said motor. Projecting downwardly from the free end of the motor holding frame C are flanges 20, said flanges-acting as bearingsfor the knife holding shaft 2I,. said knife holding shaft passing completely through one of said flanges and having a pulley 22 rotationally rigid therewith, said pulley being fixed on that part of the shaft which passes through the flange 2a. A belt 23 connects pulley 2| with the pulley 22 fixed to the drive shaft ofvthe electric motor D.

Also rotationally rigid with said knife shaft 2| are the cutting knives 24 which may assume any shape, depending upon the surface of the finished The bench frame member A comprises a lower base and an upper base 3|. Positioned on the lower base 30 is the motor M and the reduction gear box G. The reduction gear box is of any known type, the one shown being of th worm and gear type.

The universal coupling member 32 secures the drive shaft33 of the motor M to the high speed shaft 34 of the reduction gear box G.

Positioned on one side 35 of the upper base 3| of the bench frame A are the bearing members 4| having shaft 42 rotationally held therein, said shaft 42 having a pulley 43 shown in broken line, and an eccentric wheel 4|] fixed thereon. The eccentric wheel has a diametric slot 46 formed therein, said eccentric wheel 40 having an adjustable connecting rod 41 connected thereto by means of a pin 48 passing through one end of the connecting rod and through slot 46, said pin 48 being adjustable within said slot 45.

The adjustable connecting rod 41 is formed of two parts 48 and 49 having corresponding longitudinal slots50 and 5| formed therein and being Another track member 6| also runs from the t front of the bench parallel to the tracks and terminating at about the same point as the tracks 60, said track Bl, however, being situated at a higher elevation than track 60, and having a depressed portion 62 at a point substantially close to the initial point of said track. The carriage member E is connected to the connecting rod 41 by means of a pin bolt 63 passing through a bifurcated eye flange 64', said eye flange extending rearwardly of said carriage E andsaid bolt also passing through'an'aperture of the forward end of the said connecting rod 41.

The carriage E has a pair of longitudinal parallel bores 65 formed therein, said bores being slidably engaged by the parallel track members 60 and said carriage being adapted to freely ride on said tracks.

A work holding member F is adjustably'fixed on the'carriage E'by any suitable means;

In the present case; an intermediate plate 66 is pivotally" mounted around bolt 61, said bolt passing through an opening 68 of said plate 66 and being fixed in the'inner vertical flange wall 69 of the carriag'eE.

An arcuate T-shaped slot 10 is formed in said intermediate plate 66, the'center of curvature of said slot being the center of the opening 68', said slot'lll having shoulders lilo formed therein. A bolt having the'inner face of the head Ha resting on the shoulders 10a passes through'said slot 10 and aperture 101) formed in flange 69 said bolt having nut 'Hb engaging its free end and being adapted to fixedly set plate 66 to flange B9. Mounted in said plate 66 and being vertically adjustable in said plate, is the work holding member F, said work holding member F having a depending flange 12 slidably mounted in a groove 13 formed on the right face of the plate 66. A vertical slot 12a is formed in the flange 12 said vertical slot having passing therethrough the bolt 61 which bolt has the washer 61a at its headed end pressing against the outer face of flange 12. The vertical position of work holding member A may thus be fixed by said bolt 61.

The aforedescribed arrangement allows the work holding member to be adjustable as to the angle it makes to the horizontal and also adjustablein a vertical movement.

The work grasping member comprises a pair of jaws '80 and 8|, one of said jaws being substantially stationary and the other of said jaws being movable so as to allow for the insertion or removal of the work piece.

The stationary jaw comprises the jaw member proper 82 having a horizontal normal projection 83, said projection 83 being slidable within an aperture formed in a block 85, said block 85 being positioned on the left hand top face of the work holding member F. A pair of stiff compression springs 86 are housed in openings 85 in the block 85 and press against the inner faces of depressions formed in the inner side of the'jaw 82.

The movable jaw member 8| is positioned on the vertical. leg of angle member 8'! by means of bolt 88, the horizontal leg of said angle member being secured to the slidable member 89, said slidable member having a rod 90 of rectangular cross section slidably mounted within the corre spending groove 9| formed within the upper part of member 92 of the work holding member F.

At the outer right end of said slidable member 89 is positioned the roller member 93, said roller member being held between the projecting pair of arms 94 by means of pin 95.

A tension spring 95 having one end fixed to any convenient point 91 of the Work holding member F and having its other end secured to the free end of the rod 90 outwardly impels the said rod 90 whereby the roller 93 is in contact with the working face of the track 6|, thus keeping the jaws 80 and 8| in open position when said roller contacts the depressed portion of said track. On the other hand, when the carriage E is further forward andthe roller 93 is in contact with the-raised portion of track 6| the jaws 80 and 8 I assume a closed position.

A work holding base I00 and a Work holding front ||J| having the adjustable set screw W2 is also provided on said work holding member so as to conveniently position the work piece.

Removably secured to the outer side of vertical flanges I83 of the carriage E by means of bolts M4 passingthrough the said vertical flanges. I03 and nuts I05, are the pair ofguide members I06, said guide members having an upper cam edge NH. The shape of this cam edge depends upon the desired shape of the upper surface of the heel andit should be noted that if a warped surface is required the shape of the upper cam edge of each of the guide members is different. The wheels 26 and the guide members I06 are so positioned that the concave surface of the wheels 26 ride on the cam edges of said guide members.

On the left leg 39 of the bench member is provided adjustable belt tautening means I08 having a roller I09 contacting the belt l H].

My device operates as follows:

The work holding member F is adjusted to the desired position by means of the adjusting mechanism consisting of the plates 66, 69 and 12. The motors D and M are caused to operate, thus revolving the cutting knives 24 and the eccentric wheel 40 which in turn causes the carriage member E to reciprocate. When the carriage member E is at its rightmost position, the roller 93 of the movable jaw member is impelled into the depression 62 of the track member 6| by spring 96, thus opening the work grasping jaw members and allowing the work piece blank to be inserted therebetween.

The work piece blank is then inserted and the carriage member E moves towards the left, the roller 93 of the movable jaw being caused to ride out of the depression 62, and bringing the work holding jaws into closed position, thus grasping the blank. While the blank is thus grasped between the jaws, the carriage is moved so that said blank is brought into contact with the revolving knives 24 and the upper surface of said blank is cut to the shape predetermined by the contour of the cam edge of the guide members I06, the knives 26 being controlled through the rollers 26 rolling along said cam edge. After the blank has passed the revolving knives and reached the leftmost position of the reciprocating stroke, the direction is reversed since the eccentric wheel has completed half a revolution, and the carriage is then returned to the rightmost position, whereat the roller 93 again falls into the depression 62, thus causing the work holding jaws to separate and allowing the finished heel to be removed from the work holding member and the new heel therein inserted.

I have shown the gripping surface of the work grasping jaws as being fiat and the revolving knives being so shaped as to cut a surface whose transverse elements are straight lines. However, as shown in Figures 8 and 9, the work gripping surfaces I I0 and III of the jaws may be of arcuate shape so as to engage a heel whose sides have already been shaped, and the knives H2 may be curved so as to cut a surface in the upper part of the heel whose transverse elements are concave.

Figure 10 shows a finished work piece as cut by a straight knife and as engaged by the plane surface jaws, whereas Figure 11 illustrates a heel in which the sides have been shaped before being inserted into the machine, and in which the curved knives have been employed.

I have shown preferred embodiments of my invention but it is obvious that numerous alterations and omissions may be made without departing from its spirit provided they come within the scope of the claims.

I claim:

1. A machine of the character described comprising a base portion, a standard mounted at one end of said base portion, a motor holding frame, one end of said motor holding frame being universally connected to the top end of the standard, an electric motor mounted on said motor holding frame, revolving cutting means depending from the free end of said motor holding frame and being motivated by the said electric motor, guide rollers fixed relative to said cutting means, horizontal track members mounted on said base portion normal to the axis of rotation of said cutting means, a carriage slidable along said tracks, means for reciprocating said carriage, a work holding member mounted on said carriage, a pair of guide members positioned on said carriage and having upper cam surfaces of different contours, said guide members being positioned on either side of said work holding member and being substantially spaced therefrom, said cam surfaces running in a direction parallel to the direction of movement of said carriage, said cam surfaces engaging said guide rollers thereby determining the position of the cutting member relative to the piece positioned in the adjustably mounted work holding member.

2. A machine as characterized in claim 1 in which the work holding member is adjustable vertically and angularly with respect to the slidable carriage.

OSCAR GEORGE DAY. 

